How do I replace four spaces by one tab in a big python codebase?

Question

I have downloaded a python code and would like to edit it. The problem is that I used to use tabs to make indents but file use four spaces instead and if a combination of spaces and tabs is used, visually it looks fine, but the code generate errors.

My question is if there is a simple way to replace spaces by tabs?

Answer 1

get an editor that understands simulated tabs. then it will simulate tabs using 4 spaces. Most editors can do this nowadays. They feel just like tabs but are spaces..